Evaluation of the detoxification of brewery’s spent grain hydrolysate for xylitol production by Debaryomyces hansenii CCMI 941

2005 ◽  
Vol 40 (3-4) ◽  
pp. 1215-1223 ◽  
Author(s):  
F. Carvalheiro ◽  
L.C. Duarte ◽  
S. Lopes ◽  
J.C. Parajó ◽  
H. Pereira ◽  
...  
Keyword(s):  
Debaryomyces Hansenii ◽  
Xylitol Production ◽  
Spent Grain ◽  
Brewery's Spent Grain

Xylitol production by Debaryomyces hansenii in brewery spent grain dilute-acid hydrolysate: effect of supplementation

2007 ◽  
Vol 29 (12) ◽  
pp. 1887-1891 ◽  
Author(s):  
Florbela Carvalheiro ◽  
Luís C. Duarte ◽  
Raquel Medeiros ◽  
Francisco M. Gírio
Keyword(s):  
Debaryomyces Hansenii ◽  
Xylitol Production ◽  
Dilute Acid ◽  
Acid Hydrolysate ◽  
Spent Grain ◽  
Dilute Acid Hydrolysate

scholarly journals Bimetallic Pd-Au/SiO2 Catalysts for Reduction of Furfural in Water

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 444 ◽  
Author(s):  
Magdalena Modelska ◽  
Michal J. Binczarski ◽  
Zbigniew Kaminski ◽  
Stanislaw Karski ◽  
Beata Kolesinska ◽  
...  
Keyword(s):  
Solid Solution ◽  
Reaction Mechanism ◽  
High Activity ◽  
Main Product ◽  
Waste Biomass ◽  
Catalytic Systems ◽  
Tof Sims ◽  
Spent Grain ◽  
Brewery's Spent Grain ◽  
Hydrolysis Of

Catalytic systems based on bimetallic Pd-Au particles deposited on SiO2 were prepared by ultrasonically assisted water impregnation and used in the hydrogenation of furfural obtained by the acidic hydrolysis of waste biomass (brewery’s spent grain) in aqueous phase. Pd-Au/SiO2 catalysts containing 50 g of Pd and 2–100 g of Au per 1 kg of catalyst were characterized by high activity in the studied process and, depending on the Pd/Au ratio, selectivity to 2-methyloxolan-2-ol. The modification of 5%Pd/SiO2 by Au leads to the formation of dispersed Au-Pd solid solution phases, which was confirmed by XRD, XPS, ToF-SIMS, SEM-EDS, and H2-TPR techniques. The effect of dilution of surface palladium by gold atoms is probably crucial for modification of the reaction mechanism and formation of 2-methyloxolan-2-ol as the main product.

Optimization of Brewery's Spent Grain Dilute-Acid Hydrolysis for the Production of Pentose-Rich Culture Media

2004 ◽  
Vol 115 (1-3) ◽  
pp. 1059-1072 ◽  
Author(s):  
Florbela Carvalheiro ◽  
Luís C. Duarte ◽  
Raquel Medeiros ◽  
Francisco M. Gírio
Keyword(s):  
Acid Hydrolysis ◽  
Culture Media ◽  
Dilute Acid ◽  
Dilute Acid Hydrolysis ◽  
Spent Grain ◽  
Brewery's Spent Grain

Carbon Material and Bioenergetic Balances of Xylitol Production from Corncobs by Debaryomyces hansenii

2003 ◽  
Vol 19 (3) ◽  
pp. 706-713 ◽  
Author(s):  
B. Rivas ◽  
P. Torre ◽  
J.M. Dominguez ◽  
P. Perego ◽  
A. Converti ◽  
...  
Keyword(s):  
Carbon Material ◽  
Debaryomyces Hansenii ◽  
Xylitol Production

Study of the potential of the air lift bioreactor for xylitol production in fed-batch cultures by Debaryomyces hansenii immobilized in alginate beads

2013 ◽  
Vol 98 (1) ◽  
pp. 151-161 ◽  
Author(s):  
Belinda Pérez-Bibbins ◽  
Ricardo Pinheiro de Souza Oliveira ◽  
Ana Torrado ◽  
María Guadalupe Aguilar-Uscanga ◽  
José Manuel Domínguez
Keyword(s):  
Debaryomyces Hansenii ◽  
Alginate Beads ◽  
Xylitol Production ◽  
Fed Batch ◽  
Batch Cultures ◽  
Air Lift

scholarly journals Xylitol Production from Oil Palm Empty Fruit Bunches (OPEFB) Via Simultaneous Enzymatic Hydrolysis and Fermentation Process

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Efri Mardawati ◽  
Nadya Maharani ◽  
Dwi Wahyudha Wira ◽  
Budi Mandra Harahap ◽  
Tri Yuliana ◽  
...  
Keyword(s):  
Oil Palm ◽  
Substrate Concentration ◽  
Specific Growth ◽  
Descriptive Analysis ◽  
Debaryomyces Hansenii ◽  
Raw Material ◽  
Xylitol Production ◽  
Empty Fruit Bunches ◽  
Ssf Process ◽  
Specific Growth Rates

Oil palm empty fruit bunches (OPEFB) are the waste of palm oil processing and lignocellulosic biomass that can be used as raw material for xylitol production. In this research, bioconversion of xylitol using the Simultaneous Saccharification and Fermentation (SSF) process in one reactor with a short time and could save the cost. Pretreatment requires to degrade the lignin compound with thermal pretreatment. Hydrolysis of OPEFB performs enzymatically by commercial xylanase enzyme that is Cellic Htec2 and continued with fermentation by yeast Debaryomyces hansenii. The research used experimental and descriptive analysis that covers of variation of OPEFB substrate concentration (7.5%, 10%, 15%, 20%) on specific growth rate (µ), the yield of xylitol and substrate utilization. The results showed that an increase of OPEFB substrate concentration affected by the increase of specific growth rates  (μ) are 0.091/h, 0.094/h, 0.095/h and 0.126/h. It also affected to the decreasing of xylitol yield on 42 hours fermentation are 0.201 g/g; 0.189 g/g; 0.170 g/g; and 0.104 g/g.

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